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An anonymizer or an anonymous proxy is a tool that attempts to make activity on the Internet untraceable. It is a proxy server computer that acts as an intermediary and privacy shield between a client computer and the rest of the Internet. It accesses the Internet on the user's behalf, protecting personal information by hiding the client computer's identifying information.

Solution that let you define the state of a system via a baseline. Then you can monitor and alert for changes with an option to automatically enforce the correct configuration to ensure the right services are up and running, on the right platforms. This can ensure that correct security configurations remain in place and also assist in intrusion detection.

Secure communication is when two entities are communicating and do not want a third party to listen in. For that they need to communicate in a way not susceptible to eavesdropping or interception. Secure communication includes means by which people can share information with varying degrees of certainty that third parties cannot intercept what was said.

A firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic based on applied rule set. A firewall establishes a barrier between a trusted, secure internal network and another network (e.g., the Internet) that is not assumed to be secure and trusted.

Computer forensics is a branch of digital forensic science pertaining to legal evidence found in computers and digital storage media. The goal of computer forensics is to examine digital media in a forensically sound manner with the aim of identifying, preserving, recovering, analyzing and presenting facts and opinions about the digital information.

Fuzz testing or fuzzing is a software testing technique, often automated or semi-automated, that involves providing invalid, unexpected, or random data to the inputs of a computer program. There are two forms of fuzzing program, mutation-based and generation-based, which can be employed as white-, grey-, or black-box testing.

Packet crafting is a technique that allows network administrators or hackers to probe firewall rule-sets and find entry points into a targeted system or network. This is done by manually generating packets to test network devices and behaviour, instead of using existing network traffic.

A packet analyzer (network analyzer, protocol analyzer, Ethernet sniffer or wireless sniffer) is a computer program or a piece of computer hardware that can intercept and log traffic passing over a digital network or part of a network. As data streams flow across the network, the sniffer captures each packet and, if needed, decodes the packet's raw data, showing the values of various fields in the packet, and analyzes its content.

Password cracking is the process of recovering passwords from data that have been stored in or transmitted by a computer system. A common approach (brute-force attack) is to repeatedly try guesses for the password.

A port scanner is a software application designed to probe a server or host for open ports. This is often used by administrators to verify security policies of their networks and by attackers to identify running services on a host with the view to compromise it.

A proxy server is a server (a computer system or an application) that acts as an intermediary for requests from clients seeking resources from other servers. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource available from a different server and the proxy server evaluates the request as a way to simplify and control its complexity. Proxies were invented to add structure and encapsulation to distributed systems.

Reconnaissance is the military term for exploring beyond the area occupied by friendly forces to gain vital information about enemy forces or features of the environment for later analysis and/or dissemination. In IT we explore to identify and gather as much data as we can through as many resources as we can identify including search engines, social media, public domain data, marketing information, company news releases, etc.

Screen recording can be useful when you need to record a how-to video to help someone learn how to use a program, record a walkthrough, or prepare for a presentation. Record here means you can create a video of whatever you are doing on your desktop, save the recording as a video file and send it to a coworker or upload it on YouTube.

Solution that let you define the state of a system via a baseline. Then you can monitor and alert for changes with an option to automatically enforce the correct configuration to ensure the right services are up and running, on the right platforms. This can ensure that correct security configurations remain in place and also assist in intrusion detection.

A vulnerability scanner is a computer program designed to assess computers, computer systems, networks or applications for weaknesses. Some of the solutions alsp provide the ability to exploit the vulnerability once identified, e.g. Metasploit. See also Web Vulnerability Scanners, which are designed to scan web applications.

A web vulnerability scanner is a computer program designed to assess web applications for weaknesses. They can be run either as part of vulnerability management by those tasked with protecting systems - or by black hat attackers looking to gain unauthorized access.

Solution that let you define the state of a system via a baseline. Then you can monitor and alert for changes with an option to automatically enforce the correct configuration to ensure the right services are up and running, on the right platforms. This can ensure that correct security configurations remain in place and also assist in intrusion detection.

AIDE (Advanced Intrusion Detection Environment) is a file and directory integrity checker.It creates a database from the regular expression rules that it finds from the config file(s). Once this database is initialized it can be used to verify the integrity of the files. It has several message digest algorithms that are used to check the integrity of the file. All of the usual file attributes can also be checked for inconsistencies. It can read databases from older or newer versions. See the manual pages within the distribution for further info.

Scanning results can be saved to CSV, TXT, XML or IP-Port list files. With help of plugins, Angry IP Scanner can gather any information about scanned IPs. Anybody who can write Java code is able to write plugins and extend functionality of Angry IP Scanner.

In order to increase scanning speed, it uses multithreaded approach: a separate scanning thread is created for each scanned IP address.

Codenomicon AppCheck is a security-focused application composition analysis scanner. What makes it unique is that it operates purely on provided binary images or compiled applications. No source code is required. Results of the composition analysis include identification of third party code and libraries included within the scanned software, vulnerabilities in the third party code that could be exposed in the scanned software, and software licenses such as AGPL, BSD, GPLv2, GPLv3 and LGPL associated with the third party code that may have implications for the whole software package.

Argus is Network activity audit tool, they call it a "next-generation network flow technology tool", going from packets on the wire to advanced network flow data, to network forensics data; all in support of Network Operations, Performance and Security Management. If you need to know what is going on in your network, right now or historically, you will find Argus a useful tool. It currently runs on Mac OS X, Linux, Solaris, FreeBSD, OpenBSD, NetBSD, AIX, IRIX, Windows (under Cygwin) and OpenWrt, and has been ported to many hardware accelerated platforms, such as Bivio, Pluribus, Arista, and Tilera.

Autopsy® is a digital forensics platform and graphical interface to The Sleuth Kit and other digital forensics tools. It can be used to analyze disk images and perform in-depth analysis of file systems (such as NTFS, FAT, HFS+, Ext3, and UFS) and several volume system types.

AutoScan-Network is a network scanner (discovering and managing application). No configuration is required to scan your network. The main goal is to print the list of connected equipment in your network.

BackTrack is a Linux-based pen-testing toolbox security professionals use to perform assessments in a purely native environment dedicated to hacking.

Users have easy access to a variety of tools ranging from port scanners to password crackers. Users can boot BackTrack directly from portable media without requiring installation, though permanent installation to hard disk is an option.

The Become utility changes the current effective, or real, user and group identity to those specified on the command line. The default shell (/bin/sh) is then executed. UID and GID are specified numerically and do not have to be currently defined on the system.

The Browser Exploitation Framework (BeEF) is a powerful professional security tool. BeEF is pioneering techniques that provide the experienced penetration tester with practical client side attack vectors. Unlike other security frameworks, BeEF focuses on leveraging browser vulnerabilities to assess the security posture of a target. This project is developed solely for lawful research and penetration testing. BeEF hooks one or more web browsers as beachheads for the launching of directed command modules. Each browser is likely to be within a different security context, and each context may provide a set of unique attack vectors.

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